Differential
Thread Starter
Instructor
Joined: May 2006
Posts: 184
Likes: 2
From: Near Detroit in Ontario
Differential
I'm not a mechanic but I thought a mechanial limited slip diff (base c7?) was better than an electronic limited slip diff (c7 z51?)
The Lexus IS-F went from an e-diff to non e-diff and handling/lap times improved.
Any thoughts?
Thanks
The Lexus IS-F went from an e-diff to non e-diff and handling/lap times improved.
Any thoughts?
Thanks
Le Mans Master
Joined: Dec 2000
Posts: 9,923
Likes: 1,884
From: Hot Springs AR
It depends on the "e" in e-diff. BMW has a "limited slip" diff that is electronically controlled. That is, until you learn that the way it works is by the brake system applying the brake on the unloaded wheel. IOW, when you're trying to put power to the rear wheels, the brake system is counteracting that on the inboard wheel (assuming that's the one that's unloaded). In this case the mechanical LSD will be superior to the BMW's e-LSD.
OTOH, from what I've read, the C7's e-LSD is a mechanical LSD that has electronically controlled hydraulic clutch packs. If this is correct then it should be better than a traditional clutch pack, if only because of the dynamic aspect of the diff.
HTH, and have a good one,
Mike
OTOH, from what I've read, the C7's e-LSD is a mechanical LSD that has electronically controlled hydraulic clutch packs. If this is correct then it should be better than a traditional clutch pack, if only because of the dynamic aspect of the diff.
HTH, and have a good one,
Mike
Melting Slicks
Joined: Jan 2010
Posts: 2,205
Likes: 67
From: Cumming GA
The McLaren MP4-12C has an e-diff I believe as well as other high end performance cars. One properly implemented should be superior since it can be directly tied into the body control module. The system no longer has to guess what the diff will be doing.
Drifting
Joined: Feb 2005
Posts: 1,330
Likes: 57
This is the grossest kind of negligent overreach by electrical engineers and insurance people, against the interests of real men, mech engineers, people who plan to keep the car a while, and drivers who have pride.
Melting Slicks
Joined: Jun 2005
Posts: 2,216
Likes: 1
St. Jude Donor '12-'13-'14, '16
it's one of the things that allows the 3850lbs GTR (not a fan) to turn the times it does.
